Sewing-machine shuttle



(No Model.)

W. L. HEBERLING.

SEWING MACHINE SHUTTLE. No. 346,281. Patented July 27, 1886.

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UNITED STATES PATENT GFEIQE.

YVILIiIAM L. IIEBERLING, OF BATH, ASSIGNOR OF ONE-FOURTH TO IVARREN HEBERIJING, OF HAVANA, ILLINOIS.

SEWING-MACHINE SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 346,281, dated July 27, 1886.

Serial No. 178,384. (Noinodehi T0 aZZ whom, itmay concern.-

Be it known that LXVILLIAM L. HEBERLING, a citizen of the United States, residing at Bath, in the county of Mason and State of Illinois, have invented certain new and useful Improvements in Sewing-\Iaolrine Shuttles, of which the following is a specification, reference beinghad therein to the accompanying drawings. My invention relates to that class of rotary sewing-machine shuttles having disk-bobbins contained in stationary bobbin-cases supported by the bodies or shells of the shuttles; the present invention comprising certain improvements in the forms of shuttles shown by Patents Nos. 311,490 and 311,491, granted February 3, 1885, to John Heberling and myself. In the drawings, forming part of this specification, Figures 1 and 2 are front views of two forms of my improved shuttle. Figs. 3 and 4 are sectional views of the same with the bobbin-casesand bobbinsin position. Fig. 5 is a front view illustrating the operation of my shuttle. Fig. 6 is a top view of the bobbin-case. Fig. 7 is a detail front view of the bobbin-case with the tension-spring removed; and Fig.8, a sectional view of the bobbin-case on line 8 S, Fig. 7. Fig. 5) is a detail perspective view of the tension-spring; and Fig. 10, detail views of several forms of spring-catches. A denotes the shuttle-body, which is made as a dish-formed shell, provided with a point or hook, (I, for seizing the loops of needlethread, and with a guard, b, for insuring the passage of the outer limbs of the said loops over the outer face of the bobbin-ease B. The shell A is cut away on one side in front of the hook a to form a loop-passage, C, and said shell has in its center a space, a, which is occupied by the bobbin 1) and its case B, and which is termed the bobbin-space. This bobbin-space preferably extends out to the loop-passage C, so as to admit of the use of a bobbin having the largest possible diameter relative to the size of the loops of needlethread required to pass around the shuttle and bobbin-case, as in Patent No. 311,491, above referred to.

The shell A is provided with a central pin for-supporting the non-rotary bobbin-case B and the bobbin D. In the form of my invention shown in Figs. 1 and 3 this pin a is bored out for the reception of a bobbin-caseretaining spring-catch, E, and the bobbin-ease is provided with a central pin, I), in the form of a sleeve, which fits over the pin (L2 when the parts are in working position. In Figs. 2 and 4. this construction is reversed by provid ing the bobbin case B with the bored-out pin a, which carries the spring-catch 1*], and forming the sleeve-pin Z), in which the pin a? fits on the shell A.

At the base of the pin a, on the outer face of the part by which it is carried, I form a small recess, a, which is larger in diameter than the space in the pin a occupied by said spring'catch, and the looped end of the latter is bent over at a right angle, or nearly so, to the body of said catch to form a small hook, 6, adapted to engage the shoulder formed by said recess, and thus assist in holding the catch in place. The end of the pin (6 is provided with a transverse nick or slot, (0, and the ends of the spring-catch E are bent over to form projections e, occupying said slot and extending outside of the body of the pin a The pro jecting ends 0 are preferably within the end of the pin, or, in other words, nearer to the base of said pin than the top or outer end thereof, the slot (0 being made deep enough for this purpose. At the base of the sleevepin I), I form a recess, 11 which is undercut, or made larger in diameter then the inside of said sleeve-pin, thus forming a shoulder for the engagement of the projecting ends 0 of the spring-catch. The end of the sleeve-pin b is beveled, or made slightly flaring at W, so that when the bobbin-case is to be placed in position in the shuttle the said sleevc-pin will slip over the projecting ends 0 of the springcatch, and compress them within the slot at until the bobbin-case is in place, when the said ends will spring outward into the recess I), and by engagement with the shoulder there of will hold the bobbincasc securely in working position.

The shoulder of the recess If, engaged by the ends a of the spring-catch, is inclined, so that when the bobbin-case is to be removed a slight outward pull thereon, enough to overcome the stress of the arms of the springcatch, will compress the said ends c into the slot at", and thus permit the bobbin-case to be slipped out of the shuttle-shell; or this same result may be effected by making the ends 0 of the spring-catch inclined and the shoulder square.

The spring-catch E consists, preferably, of a single bent piece of steel wire having two projecting ends, e, as shown in detail in Fig. 10; but it may be provided with only one projecting end or catch or may be a small platespring, if desired, as shown in the modifications in said figure.

In Patent No. 311,490, above referred to,the shuttle-shell is shown as being of about half the depth of the bobbin-case, said shell having an inclined. guard rearward of the point of the shuttle, for carrying the loops of needle thread overthe outer face of the bobbin-case. In my present shuttle the shell thereof is made nearly as deep as the bobbin-case,'and the guard I), instead of being inclined, as formerly, is straight, so that when the shuttle is in working position it will be vertical. This straight guard 2) permits the bobbin to be" so that a larger bobbin may be used, andthe periphery thereof may be brought up closer to the throat-plate than would be permitted by the old form of shuttle and guard, as in the old form the needle would come in contact with so large a bobbin as may be used with my new shuttle. The guard 12 is merely a thin rib, behind which, outside of the bobbin-case, is left an open space, so that the shuttle-shell will be as light as possible. The straight. guard b may extend all around the shell A, except at the loop-passage, as shown'in Figs. 1 and 5, or it may be made short, extendingonlya small distance rearward of the hook at,

as shown in Fig. 2.

The bobbin-case 13 is provided with a rigid arm, F, which engages some stationary part of I the machine, and thus prevents the said bobbin-case from rotating with the shuttle, as is usual with this class of devices. The arm F is provided with an open-thread slot, f, and with a small notch, f, atits upper end. G is the tension-spring, which is attached-to the arm F by a securing and regulating screw, g, and the said spring is provided at its upper end with a small hook, g, overlapping the top of the arm 1 said hook having a thrcadnotch, 9 upper side with an open or slotted threadhole, I), and with a recess, 1), the latter admitting of the descentof the needle to a proper extent to form loops to be caught by the point of the shuttle.

The bobbin-case is provided at its- Thebobbin-caseisthreaded simplybydraw- 6o ing the bobbin-thread into the hole b in said ease, into the slot f in the arm F and beneath the tension-spring, andthen into the notch f at the top of said arm, in which position it will be retained'by the hooked and notched end of the tension-spring.

Havingthus described my invention, Iclaim and desire to secure by Letters Patent 1. Asewing-machine shuttle-shell cutaway on one side to form a lo'op-passage, and having a bobbin-space extending to said looppassage, and a sleeve-pin centrally arranged in said bobbin-space, combined with a bobbin case provided with a pin fitting in said sleevepin, and having its periphery extending to the edge of said shuttle-shell at said loop-passage, and a securing device, as a spring-catch, for retaining the said bobbin-case in place, substantially as set forth.

2. A- sewing-machine shuttle-shell cut-awayon one side to form a loop-passage, and having' a bobbin-space extending to said looppassage, a pi-n'centrallyarranged in said bobbi-1r-space, and a-straight guard rearward of the hook or point of said shuttle, combined with a bobbin-case supported by said pin and having its peripheryextending to the edge of said shuttle-shell at'said loop-passage, and a spring catch forretaining the said bobbincase in place, substantially as set forth.

3.. A sewing-machine shuttle shell and a bobbin case supported thereby, one of the said parts having a sleeve provided with-a shouldered recess and. the other of said parts having abored-out pin, combined with a spring: catch secured in said pin, and having one: or more projecting ends engaging said shouldered recess to retain said bobbin-case in place in: the shuttle-shell, substantially as set forth;

4. The combination, with the shuttle-shell A, having the bored-out pin a, provided with the slot at of the spring-catch E, havingprojecting ends e',and the bobbin-case 13, provided with the sleeve-pin b, having the shoulderedrecess b at its base, substantially as set forth.

5. The combination, with the shuttleshell and the bobbin-case supported thereby, of the rigid arm F, having the th-read-slotf and the tension spring G, having the hook g, overlapping. the top of said arm and provided with a thread-notch, g asset forth.

In testimony whereof I aflix my signature in presenee of two witnesses.

VILLIAM L. HEBERLIN'G.

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Vitnesses:

HENRY OALVER, OLARENOE E. DOYLE. 

